U.S.D.A. Hardiness Zones Map

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The U.S.D.A. plant hardiness zones are used by gardeners and landscapers as a standard to determine what plants will survive in a specific location.

Each hardiness zone is determined by the lowest winter temperatures in each specific zone.

The zones are separated by ten degrees which may not sound like much of a difference but planting something in zone five when it’s not supposed to be will result in the death of the plant during the coldest winter months.

HARDINESS ZONE 1

Hardiness zone 1 is characterized by average winter temperatures ranging from -60 degrees Fahrenheit to -50 degrees Fahrenheit.

Plants that grow in this zone have to survive freezing temperatures and little water, therefore there are not many species.

When growing vegetables it is best to start the seed indoors or use a greenhouse for better results.

HARDINESS ZONE 2

Hardiness zone 2 is characterized by average winter temperatures ranging from -50 degrees Fahrenheit to -40 degrees Fahrenheit.

Zone two is similar to zone one with slightly warmer winter temperatures, therefore most gardeners in this zone grow annual gardens.

In this zone, there are some perennial vegetables that can survive cold weather temperatures such as asparagus, swiss chard, mustard green, and a few root vegetables.

HARDINESS ZONE 3

Hardiness zone 3 is characterized by average winter temperatures ranging from -40 degrees Fahrenheit to -30 degrees Fahrenheit.

This zone is not that much different the zone 2 but there are more options available with vegetable crops that are quick to mature.

HARDINESS ZONE 4

Hardiness zone 4 is characterized by average winter temperatures ranging from -30degrees Fahrenheit to -20 degrees Fahrenheit.

This zone has a short growing season, therefore starting your seeds indoors in very early spring and adding mulch in the fall will help.

HARDINESS ZONE 5

Hardiness zone 5 is characterized by average winter temperatures ranging from -20 degrees Fahrenheit to -10 degrees Fahrenheit.

In this zone after the spring greens are in the ground, crops that are fast to mature for an early summer harvest.

HARDINESS ZONE 6

Hardiness zone 6 is characterized by average winter temperatures ranging from -10 degrees Fahrenheit to -0 degrees Fahrenheit.

With this zone, the summer months are longer with hotter summer months and cool temperatures in the spring and fall.

This allows for growing a wide variety of fruits and vegetables.

HARDINESS ZONE 7

Hardiness zone 7 is characterized by average winter temperatures ranging from -0 degrees Fahrenheit to 10 degrees Fahrenheit.

This zone has cool winters which give gardeners and landscapers a wider option to choose from.

HARDINESS ZONE 8

Hardiness zone 8 is characterized by average winter temperatures ranging from 10 degrees Fahrenheit to 20 degrees Fahrenheit.

With mild winters, gardeners in this zone have a longer growing season with a wide variety of planting options with vegetable gardens, botanical gardens, and landscaping.

HARDINESS ZONE 9

Hardiness zone 9 is characterized by average winter temperatures ranging from 20 degrees Fahrenheit to 30 degrees Fahrenheit.

This zone experiences warm winters which provide gardeners and landscapers with a wide variety of options to choose from.

The warmer winter also gives a longer growing season for vegetable gardeners.

HARDINESS ZONE 10

Hardiness zone 10 is characterized by average winter temperatures ranging from 30 degrees Fahrenheit to 40 degrees Fahrenheit.

In this zone, the warm winters make up for the extreme summer heat.

Botanical gardens and landscaping need to be planted with heat and drought-tolerant plants if you are in a dry climate.

HARDINESS ZONE 11

Hardiness zone 11 is characterized by average winter temperatures ranging from 40 degrees Fahrenheit to 50 degrees Fahrenheit.

With this zone cold hardiness is not an issue, instead, the extreme heat is the issue, and the cooler winter and spring months are the main growing times.

HARDINESS ZONE 12

Hardiness zone 12 is characterized by average winter temperatures ranging from 50 degrees Fahrenheit to 60 degrees Fahrenheit.

This zone requires plants that are suited for tropical environments is best because of the extreme heat.

Starting vegetable garden seeds indoors allows for a bigger yearly harvest because most gardeners only grow during the cooler winter months.

HARDINESS ZONE 13

Hardiness zone 13 is characterized by average winter temperatures ranging from 60 degrees Fahrenheit to 70 degrees Fahrenheit.

This zone also requires tropical plants and is best to grow your vegetables in the cooler winter months.

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